1. Hazra AK. Matrix: Algebra, Calculus and Generalised Inverse, Viva Books Pvt. Ltd. First Indian Edition, 2009
2. Gilbert Strang. Linear Algebra and Its Applications, Thomson Brooks/Cole. Fourth Edition, 2006
3. Shah SH, Achesariya VA, Dr. Jha PJ. Operators on Pythagorean Matrices, IOSR Journal of mathematics.2015; 11:51-60.
4. Dipti Prajapati, Sweta Shah, Pradeep. J. Jha. Commutative matrices, Eigen values, and graphs of higher order matrices preserving Libra Value. 2015; 1(12):246-256.